Search results for query: *

I am asking about the reason why angle globe valves are suitable for two phase flow?

Dear members As far as I know angle type globe valves are suitable for two phase flow. from what point of view this type can tolerate such flows?

Dear Fegenbush First of all thanks for your reply. Is there any standard procedure for shell and tube heat exchanger hydro test?

As far as I know after maintenance or tube cleaning in shell and tube heat exchanger shell test is needed .how about tube test? If tube test also needed which one should be done first? Shell test or tube test?

There are different types of bonnet such as bolted bonnet,threaded,welded,extended and pressure seal type.pressure seal bonnet is used for design pressure more than 100 bar.as you can see in attached picture by increasing the internal pressure bonnet sealing improved,unlike bolted bonnet .

Flow rate=125000kg/h

I am going to size a control valve for following condition: flow condition:steam P1=41bara P2=33bara temperature=410c specific gravity=11.7 Z=0.98 what would be the amount of Cv?

What is the max Cv for 8" globe valve?

What is the specific gravity of steam at following condition? temperature=410c pressure=41bara

In some types of swing check valve,there is a hole on the disc. since it cause to leakage in close position so why is that?

How can we find Cv for a manual valve? For example,what is the Cv for 6" full port globe valve?

Pressure existing at the outlet of a pressure relief valve is defined as back pressure. there are two types of back pressure: Superimposed:which is pressure at the outlet of a pressure relief valve when it is required to operate. Built-up:back pressure which develops in the discharge system...

What is the main purpose of low pressure closure test in API598.according to mentioned standard there are also high pressure closure test which is done by higher pressure. so when we use it? and what is the advantage of that?

Can we use cathodic protection in order to eliminate corrosion in underground galvanized piping?

Can we use cathodic protection in order to eliminate corrosion in underground galvanized piping?

Your questions are about piping design.but I am not talking about that.imagine the pipe is correctly selected according to your questions.is it acceptable for underground galvanized pipe to be seal welded? Does not it cause to galvanic corrosion?

@bimr first of all thanks for your reply. I have seen underground galvanized pipe which has been seal welded.is it ok?

Can we use galvanized pipe with wrapping in underground piping?

I have seen some trim material such as 17-4PH,F6NM and... which are not exist in API600 table8. Is there another standard or reference in order to select control valve trim material?

Which material has more corrosion resistance,hastelloy B2 or C276?